PicowTFTPanel

An MQTT-driven Pico W-based information panel using an ILI9488 3.5" SPI TFT module (SKU MSP3521).

In addition, there is an AM2303 (DHT22) temperature and humidity sensor attached which reports climate values via MQTT.

A desktop case design for the project (FreeCAD and .3mf files) may be found in the 3D directory.

---
title: Typical HA Setup
---
flowchart LR
    I[Internet] --- | | R[Node-Red]
    L[LAN] --- R
    Z[Zigbee2MQTT] --- M
    R ---| |M((MQTT Broker))
    M ---| |P[PicowPanel]
    M ---| |PT[PicowTFTPanel]

Configuration

Rename the dummy_wifi_config.h to wifi_config.h and edit it to suit your WiFi setup.

• mqtt.h contains the high-level MQTT connection details
• info_items.c has the specific display items and their MQTT topics
• lcd.h includes the pin connections for the display
• picowtftpanel.c has the pin definition for the AM2302 near the top
• image.h includes the pixel dimensions of the panel

Software Update

Rebuild, then from the build directory...

picotool load picowtftpanel.uf2 -f

Pico W Pin Allocation